Document Qy9xn6a67oVzVbbvrzqBXBk

FILE NAME: Asbestos Cement Pipe and Sheet (ACPS) DATE: 2000 Nov 7 DOC#: ACPS040 DOCUMENT DESCRIPTION: Email Memo from Barry Castleman J7 - *- . isbestos-Cement Product Use Exposures mailbox:/c%7C/f/email/Outbox?id=3A082BDE.7EBA@bcpl.net&numberi 0 Subject: Asbestos-Cement Product Use Exposures Date: Tue, 07 Nov 2000 11:20:46 -0500 From: Barry Castleman <bcastle@bcpl.net> To: paekdm@snu.ac.kr, info@pria.org, drjaya@tm.net.my, tldelhi@vsnl.com CC: ThebaudMony <thebaud@vjf.inserm.fr>, Takala <Takala@ilo.org>, siqueirae@worldnet.att.net, LRoyer@compuserve.com, Rosskam <rosskam@ilo.org>, Rory <editor@hazards.org>, meenaco@pd.jaring.my, LK-A <laurie@lkaz.demon.co.uk>, rlemen@msn.com, jdwang@ha.mc.ntu.edu.tw, reg.green@icem.org, afrank@uthct.edu, fernanda <giannasi@telnet.com.br>, ETUC <LVOGEL@ETUC.ORG>, Berikson.lo@fagdata.no Dera Friends, In campaigns against asbestos, it is important to point out the very high exposures associated with use o f asbestos-cement (A-C) products in construction and demolition/renovation. I have tried to assemble some references on this and extract the key data below. If you want any o f these references just let me know. 1. M Trosper (Johns-Manville) presentation at ASBESTOS INFORMATION ASSOCIATION NORTH AMERICA, THIRD ANNUAL INDUSTRY-GOVERNMENT CONFERENC Sept. 8-9, 1976, pp. 109-115. Describes dust control methods for cutting A-C flat sheet saying that without controls exposures were "about 250 free". Using the very best control system that could be set up, this was reduced to 0.8 f/cc. 2. F Lomas (HM Inspector of Health and Safety), Presentation Notes Control of Asbestos Cement and Asbestos Insulation Board" at confrerence "Asbestos: Justice and Prevention", Nottingham 23 Oct. 1997. machine sawing without exhaust ventilation 15-25 f/cc abrasive disc saw, 10-20 f/cc circular saw, 2-10 jigsaw. 3. K Rodelsperger et al. "Estimation o f Exposure to Asbestos-Cement Dust on Building Sites" BIOLOGICAL EFFECTS OF MINERAL FIBRES VOL 2 (Ed. JC Wagner), World Health Organization, 1980, pp. 845-853. peak concentrations o f more than 100 f/cc cutting asbestos-cement sheet. 4. Kumagai et al. "Estimation o f asbestos exposure among workers repairing asbestos-cement pipes used for conduits," SANGKYO IGAKU 35: 178-187 (1993) abstract quoted in English by Henderson in comments to WTO (Nov. 19, 1999). repair work on A-C pipes incl. use of high-speed disc cutter inside and outside of holes dubg in the ground to gain access to the pipes -- 49-170 (mean 92) f/cc inside the hole, 1.7-15 f/cc outside. 5. R Weiner et al., Third Wave o f asbestos-related disease from 1of 2 11/7/00 11.20 AM "Asbestos-Cement Product Use Exposures mailbox:/c%7C/f/email/Outbox?id=3A082BDE.7EBA@bcpl net&number -0 secondary use o f asbestros S AFR MED J 84: 158-160, 1994, cited in CHRYSOTILE ASBESTOS, EHC-203, World Health Organization, 1998, p. 40. hand-sawing A-C sheet 5.7 f/cc for sweeping, 8.6 f/cc drilling, 27.5 f/cc sanding. After clean-up o f work area exposures wetre 0.5-1.7 f/cc 6. "DUST EXPOSURES DURING THE CUTTING AND MACHINING OF ASBESTOS-CEMENT PIPE" A/C Pipe Producers Association, March, 1977 and "Additional Studies" Dec. 1977. abrasive disc saw cutting o f A-C pipe wet: 26-109 and 42-65 f/cc (operator), 31-54 and 10-49 f/cc (helper) much lower exposures reported with other cutting tools, industry trade groupm recommends against use o f abrasive disc saw 7. WC Cooper, "A/C Pipe and Construction Practices --a Compliance Perspective." PERSPECTIVE 77/ PROCEEDINGS OF THE 5TH ANNUAL INDUSTRY CONFERENCE, A/C PIPE PRODUCERS ASSOCIATION, Apr. 18-19, 1977, Mexico City abrasive disc saw cutting o f A-C sewer pipe 35 f/cc (operator), 64 f/cc (helper); A-C pressure pipe 20.3 (operator), 59.7 (helper). Lower exposures were reported for other operations, and time-averaging over longer periods produced lower time-averaged exposures for the high-exposure activities. The exposures in construction and demolition have defied efforts by regulatory agencies all over the world, and it is reasonable to look at worst-case situations as representative o f what will happen as long as these products are used in construction. I invite you all to distribute this information. Barry Barry Castleman, Sc.D. bcastle@bcpl.net 2412 Pickwick Rd. Baltimore, MD 21207 USA Tel. 410-448-2648 Fax 410-448-2368 2 of 2 11/7/00 11 20 AM